A vacationer, on her newly purchased sailboat, moves at a constant velocity of 9.0 m/s (south) for 35 min, and then returns in the opposite direction at a speed of 4.0 ms for 45 min. The overall displacement of the vacationer for this trip is a. b x 10ºm [S]. The
values of a, b, and c, respectively, are

what i would say the best answer is a. 40.5

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.